Test methods for bare wires - Part 3: Tensile test
1 Scope
This part of GB/T 4909 specifies the test apparatuses, specimen preparation, measurement procedures, test results and evaluation of tensile test for bare wires.
This part is applicable to the measurement of tensile properties of various round, rectangular, special-shaped and stranded conductors.
The test method specified in this part is to make a certain length of specimen bear increasing tensile stress, generally until the specimen breaks, and measure its breaking force and elongation.
This part shall be used in combination with GB/T 4909.1-2009.
2 Normative references
The following standards contain provisions which, through reference in this part of GB/T 4909, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
GB/T 228-2002 Metallic materials - Tensile testing at ambient temperature (eqv ISO 6892:1998)
GB/T 4909.1-2009 Test methods for bare wires - Part 1: General
GB/T 4909.2-2009 Test methods for bare wires - Part 2: Measurement of dimensions
3 Terms and definitions
3.1
gauge length
the specified length of the specimen at any moment during the test. Especially the following definitions shall be distinguished
3.1.1
original gauge length
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test apparatuses
5 Specimen preparation
6 Test steps
7 Test results and evaluation
